At a glance Expert's Rating Pros ・Exclusive access to the Operator agent ・Full access to GPT-4o and all reasoning models ...

Compared to ChatGPT 's voice mode, Sesame's "conversational voice" feels natural, unforced, and engaging, which totally ...

GPT-4.5 lags compared with competitors like Anthropic’s Claude 3.7 Sonnet in academic tasks. It produces more warm responses compared with 4o and o3-mini. OpenAI has unveiled GPT-4.5, code-named Orion ...

On OpenAI's SimpleQA benchmark , which measures accuracy on factual questions, the model outperformed GPT-4o and OpenAI's o1 and o3-mini reasoning models. However, it fell short when compared to ...

It also reduces the rate of AI “hallucinations” — instances where models generate false information — to 37.1%, down from GPT-4o’s 61.8% and the o1 reasoning model’s 44%. The rollout will begin with ...

“To measure this, we asked human testers to evaluate it against GPT-4o, and GPT-4.5 outperformed on basically every category,” he added. The company has also assured that the new model is even better ...

Based on comparisons with previous versions of ChatGPT, OpenAI found that GPT-4.5 outperformed GPT-4o, OpenAI o1, and OpenAI o3-mini. GPT-4.5's accuracy in answering complex questions is 62.5 percent, ...

The new model is currently being offered at prices that are between 15 and 30 times more costly than OpenAI's GPT-4o model. In many ways, GPT-4.5 represents the end of an era for OpenAI.

According to the start-up, while GPT-4o would give factual advice to help you address your concerns, GPT-4.5 produces a more human-like, natural response. GPT-4.5 was trained on Microsoft’s ...

For now, GPT-4.5 is here as an upgrade to GPT-4o, improving response quality, reducing hallucinations, and making AI conversations feel smoother. Unlike previous versions, GPT-4.5 also encourages ...

OpenAI released GPT-4.5 with a massive price increase – API costs are $75 per million input tokens and $150 per million output tokens, representing a 1300-2900% increase from GPT-4o The model ...